Electrical rail-bond.



No. 663,360. Patented Dec. 4, I900.

W. PERVENKD.

ELECTRICAL RAIL BOND.

{Application filed Dec. 30, 1899.)

(No Model.) v

wow mamas Snipe/Mm Guam mg UNTTED STATES PATENT OEEIQE.

WILLIAM PERVENKO, OF KIEW, RUSSIA.

ELECTRICAL RAIL-BOND.

SPECIFICATION forming part of Letters Patent No. 663,360, dated December 1900- Application filed December 30, 1899. Serial No. 742,171. (No model.)

To ItZZ whmn it may concern:

Be it known that I, WILLIAM PERVENKO, a subject of the Czar of Russia,residing at Kiew, Russia, have invented new and useful Improvements in Electrical Rail-Bonds,of which the following is a specification.

My invention has for its object to provide a cheap and efficient means for conveying to the power-house the return-current of electrical railways.

For this purpose it consists in a flat ribbon of sheet metal extending continuously beneath the track-rails of an electric railway and in electrical connection therewith, as will be hereinafter more fully described and claimed.

Referring to the accompanying drawings, in which corresponding parts are designated by similar marks of reference, Figure 1 is a perspective of a line of track-rails having my invention applied thereto, the rails being supported upon cross-ties. Fig. 2 is a transverse section showing my invention applied to rails supported upon longitudinal sleepers. Fig. 3 is a similar view showing the rail as supported in concrete.

The track-rails bin Fig. l are shown as supported on ties c. Beneath the track-rails and between them and the ties the ribbon or ribbons a, of sheet metal, are placed, the ribbon extending continuously from end to end of the track and the rails resting thereon and being in contact therewith. The ribbons are by preference of a width equal to the Width of the base of the rail and of such thickness as will cause them to be of an area sufficient for the economical transmission of the current and can be of any suitable material, such as copper or iron, the latter being by preference galvanized or tinned.

In Fig. 2 I have illustrated the application of my invention to rails laid on longitudinal sleepers, the metallic ribbon being interposed between the base of the rail and the sleeper d.

In both of the constructions described above the metallic ribbon may be secured in place under the rails by the spikes which fasten the latter.

In Fig. 3 I have shown my invention as ap plied to a rail laid in concrete. In this case the ribbon may be fastened beneath the rail by iron clamps c.

It will be seen that as my conductor is fiat and extends beneath the entire length of the rail a contact-surface of large area is provided for the flow of the current from the rail to such conductor-strip and that owing to the fact that the conductor-strip extends beneath the entire length of the rail a car upon such rail delivering current thereto through its wheels will at all times act to press the rail down against the upper surface of the ribbon located beneath the rail, thereby insuring a good electrical connection between the rail and ribbon, which latter itself conveys the return-current. It will also be seen that my improved bond, consisting, as it does, of a flat metallic ribbon of appropriate width, can be cheaply made and that it may be cheaply laid, the ribbons being rolled into strips of any desired length to reduce the number of joints.

Having thus described my invention, what I claim, and desire to secure by Letters Patent of the United States, is

The hereinbefore-described rail-bond consisting of ribbon or ribbons of fiat sheet metal extending continuously between the trackrails and their supports from end to end of the track, the ribbons being in contact with the base of the track-rails.

WILLIAM PERVENKO.

Witnesses:

HARRY PATON SMITH, STEPHAN ROMAN WACHTEL. 

